Paying attention: The download will be send out by Email, We just offer software download, and if you have any question when installing or using software, we can't help you.

Caterpillar Electronic Technician (CAT ET) is diagnostic software required to communicate, diagnose and service electronically controlled Caterpillar engines and machines. When connected to an Electronic Control Module (ECM), a technician has the ability to diagnose existing and potential problems, configure the product, and obtain data for analysis.